Magnesium Silicate Powder

name: magnesium silicate

cas no.: 1343-88-0

formula: mgsio3

molecular weight: 100.39

einecs: 215-681-1

density: 3.21 g/cm3

melting point: 191 °c

appearance: white to off-white fine powder

using:  industry in addition to flavor agent, desiccant, decoloring polyether adsorbent, etc

 the crude polyether polyol in refining kettle kettle, to adding 1% ~ 5% in certain temperature ( w/w ) of water, stirring, with 75% phosphoric acid neutralization material ph to 4 ~ 6, and the average temperature control is less than 80. And after adding polyether polyol, weight0.1% ~ 0.5% magnesium silicate adsorbent ( or magnesium silicate: aluminum silicate =1:1 ( w/w ) hybrid adsorbent ), stir heated toproper temperature ( such as: 110± 5 ) vacuum dewatering. Control of dehydration rate, when the moisture content to achieve the requirement ( such as less than 0.1% ), thermal material circulation filtering ( such as 110± 5 , pressure 2 ~ 4kpa ), analysis of circulatingfiltrate of k+ (na+) ion concentration reached, collect the clear filtrate, obtain qualified polyether polyol.